org.kie.hacep.core.infra.consumer

Class DefaultKafkaConsumer<T>

java.lang.Object

org.kie.hacep.core.infra.consumer.DefaultKafkaConsumer<T>

All Implemented Interfaces:

EventConsumer, LeadershipCallback

public class DefaultKafkaConsumer<T>
extends Object
implements EventConsumer

The default consumer relies on the Consumer thread and is based on the loop around poll method.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DefaultKafkaConsumer.PolledTopic

Constructor Summary

Constructors

Constructor and Description
DefaultKafkaConsumer(EnvConfig config)

Method Summary

Modifier and Type	Method and Description
protected void	askAndProcessSnapshotOnDemand()
protected void	assign()
protected void	assignAndStartConsume()
protected void	assignAsALeader()
protected void	assignConsumer(org.apache.kafka.clients.consumer.Consumer<String,T> kafkaConsumer, String topic)
protected void	assignReplica()
protected void	consume()
protected void	consumeControlFromBufferAsAReplica()
protected void	consumeEventsFromBufferAsALeader()
protected void	consumeEventsFromBufferAsAReplica()
protected void	defaultProcessAsAReplica()
protected void	defaultProcessAsLeader()
protected void	enableConsumeAndStartLoop(State state)
protected void	handleSnapshotBetweenIteration(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record)
void	initConsumer(ConsumerHandler consumerHandler)
void	poll()
protected void	pollControl()
protected void	pollEvents()
protected void	processControlAsAReplica(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record)
protected void	processEventsAsAReplica(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record)
protected void	processLeader(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record)
protected void	restart(State state)
protected void	restartConsumer()
protected void	saveOffset(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record, org.apache.kafka.clients.consumer.Consumer<String,T> kafkaConsumer)
protected void	setLastProcessedKey()
protected void	settingsOnAEmptyControlTopic(ControlMessage lastWrapper)
protected void	startConsume()
void	stop()
protected void	stopConsume()
protected void	updateOnRunningConsumer(State state)
void	updateStatus(State state)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.kie.hacep.core.infra.consumer.EventConsumer

get

Constructor Detail

DefaultKafkaConsumer

public DefaultKafkaConsumer(EnvConfig config)

Method Detail

initConsumer

public void initConsumer(ConsumerHandler consumerHandler)

Specified by:

initConsumer in interface EventConsumer

restartConsumer

protected void restartConsumer()

stop

public void stop()

Specified by:

stop in interface EventConsumer

updateStatus

public void updateStatus(State state)

Specified by:

updateStatus in interface LeadershipCallback

askAndProcessSnapshotOnDemand

protected void askAndProcessSnapshotOnDemand()

assign

protected void assign()

assignAsALeader

protected void assignAsALeader()

assignReplica

protected void assignReplica()

assignConsumer

protected void assignConsumer(org.apache.kafka.clients.consumer.Consumer<String,T> kafkaConsumer,
                              String topic)

poll

public void poll()

Specified by:

poll in interface EventConsumer

updateOnRunningConsumer

protected void updateOnRunningConsumer(State state)

restart

protected void restart(State state)

enableConsumeAndStartLoop

protected void enableConsumeAndStartLoop(State state)

setLastProcessedKey

protected void setLastProcessedKey()

settingsOnAEmptyControlTopic

protected void settingsOnAEmptyControlTopic(ControlMessage lastWrapper)

assignAndStartConsume

protected void assignAndStartConsume()

consume

protected void consume()

defaultProcessAsLeader

protected void defaultProcessAsLeader()

processLeader

protected void processLeader(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record)

consumeEventsFromBufferAsALeader

protected void consumeEventsFromBufferAsALeader()

handleSnapshotBetweenIteration

protected void handleSnapshotBetweenIteration(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record)

defaultProcessAsAReplica

protected void defaultProcessAsAReplica()

consumeEventsFromBufferAsAReplica

protected void consumeEventsFromBufferAsAReplica()

consumeControlFromBufferAsAReplica

protected void consumeControlFromBufferAsAReplica()

processEventsAsAReplica

protected void processEventsAsAReplica(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record)

processControlAsAReplica

protected void processControlAsAReplica(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record)

saveOffset

protected void saveOffset(org.apache.kafka.clients.consumer.ConsumerRecord<String,T> record,
                          org.apache.kafka.clients.consumer.Consumer<String,T> kafkaConsumer)

startConsume

protected void startConsume()

stopConsume

protected void stopConsume()

pollControl

protected void pollControl()

pollEvents

protected void pollEvents()